is a traditional Japanese seasoning. It is a thick paste produced by fermenting soybeans with salt and kōji (the fungus Aspergillus oryzae), and sometimes rice, barley, seaweed, or other ingredients.
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74f89746a31e7034b821d3cc7c56e64576d9c7680ef73f4f81e7afcfc0add3f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4b151ad5-2c33-46f6-81d7-95672b9db410.json and https://artists.proofprofile.net/proofs/artist/4b151ad5-2c33-46f6-81d7-95672b9db410.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4df664a61bcb34d0db8be1372da1a086b42893098f117992bda759bb2e68d9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRNAR2233547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812b45ccbe0822a7989ebbf325d9ff7d130c5626f7766166e414906cefcad66a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRNAR2233548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9822f11c293da557275365d5c74ada3ab2b752672009c5cf68d4e4b91e9e1dd. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRNAR2233549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4360fa8d393ca22304d0acbec045dd909dc5261bb89b96ad8d91b4d5d0d074a3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRNAR2233550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854dde0248286a041dd2a7c0c4401f46ec1407abfb96786597263a2a3f7f1694. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRNAR2233552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c364f3775357f73d4d32afe30320f84262e6a31f9bb415a49b88146373de34e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRNAR2233553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b67963241e291985f5541fc899adbc121ffe72d253c52ba14abbe63fa681fb7. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRNAR2233554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2be685e18bd259787aad6fa2d8fbbbc2b60089d72e98141a7a8c68c082d7dc. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRNAR2233555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89b997a994dcdf62d7c3401fe1b790bbcfa646272a7cca7b5cc55a5a4514bde. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRNAR2233556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b53244045077c919358c8400a233fed4cc8da1a34d3d596972330a4719ffa70. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRNAR2233557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3685e6d14bf8735b835b5c25af5a0a9c9cd72b477758b947e79cc00d4e48b2. Chain 2 (Bitcoin): anchored in block 957680 (2026-07-12T09:07:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRNAR2233558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48a5a650ca6e9ea9c6c473230f19a9a7793d26d28968d6e32bac5be698a2e8e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRNAR2233559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24f5fc5768af7deb2d4836a908590a54f579bed1571c70e4b72080b797a0e14. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRNAR2233560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93f5300b4c44b9ec093c41be8a799c80ba6f1762d5de4775a3cab4f24752c70. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRNAR2233561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610663557a61dc5c3fff75742e6cbc222b0179cbd02e6636b99903a136324e3c. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRNAR2233562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5642df61b8dcc14d9eb9b25b12934e9436fae9e4fb81dc5f78e127a3535f62. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRMIM2359196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296fbbee18a380da074fe0d00e41d305a6557a1eecf17b6dfd4761f91cc76b7d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA382007096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021c86961dd5c036dfeee8da603f928e22baebe0fdd6eef0ea2625037a4433e0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRMIM2350026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44dd1a400c847e4703c84f18d0fb6192f6d5e7487c9855d23df3dcf0fce9dc9d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRNAR2338779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57e1551e173774b9badc0ac58fbf89bd845e9c011b412ae4da83f385898cca6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRMIM2207701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e05d212670ba7155da8b552476c8798ac907fc4d8e89fb3cd502eb66c22477. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRNAR1707811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021c86961dd5c036dfeee8da603f928e22baebe0fdd6eef0ea2625037a4433e0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRMIM2350026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2e803a8c57af8802647724a9eedccd6e04241001bfd337a4610078f5848cb7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA382205550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5f591d277f894a9d635e9b0d55fffa82d1498e625a1c5f985b9901817f1f3e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA381600876.
hug & kiss (feat. miso, fka, sogumm, lydia paek)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc731ece13500b50ff62c52cd20747c370ba7a2fb4dd0811366c85b9899d6589. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRA381800221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b3c18736a0f917210b631696b58669b32d434f6ff65f8c810666cf92ddcbf5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA72144729.
丸ノ内サディスティック ~Marunouchi Sadistic~ - Miso Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5727bd78b85fad8f61e23d320f538b12bad272a52b664c86a6e22800530af0ac. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPO02204065.
Combination (Feat. JUSTHIS, Miso, Don Malik)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9a6c07487bed148de83e32c173fc955b329a8550e3b331782d3a7391ff5e64. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB472102418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b980ecb4f0e0b647958690c16930160af455c804b3ff1dbf18282f2ba00dc3d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRNAR1604481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811af276df5d10ba5601c22730534bd3e96b950b744179a692494692692b25be. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRNAR1709751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811af276df5d10ba5601c22730534bd3e96b950b744179a692494692692b25be. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRNAR1709751.